To transform the first graph (which is a proportional graph representing the constant cost of $22 per t-shirt) to match the non-proportional graph of the second business (which includes a setup fee), you need to adjust the y-intercept.
The second business's cost function can be represented as:
- Business 2: \( C = 16t + 15 \)
Where \( t \) is the number of t-shirts. The y-intercept of this graph is 15.
For the first business, the cost function can be represented as:
- Business 1: \( C = 22t \)
This graph has a y-intercept of 0. To transform it into a non-proportional graph with the same y-intercept as the second business (which is 15), you need to shift the first graph up by 15.
Therefore, the correct response is:
Up 15.